fork download
copy 
  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int myStrlen(char s[]){
  5.     int i;
  6.     for(i=0;s[i]!='\0';i++);
  7.     return i;
  8. }
  9.  
  10. char *setPalindrome(char s[]){
  11. 	char *tmp;
  12. 	int i, k, l, r;
  13.     int len;
  14.     int isPal;
  15. 	len = myStrlen(s);
  16. 	for(k=0;k<len;k++){
  17.         isPal = 1;
  18.         l = k;
  19.         r = len - 1;
  20.         while(l < r){
  21.             if(s[l] != s[r]){
  22.                 isPal = 0;
  23.                 break;
  24.             }
  25.             l++;
  26.             r--;
  27.         }
  28.         if(isPal){
  29.             break;
  30.         }
  31.     }
  32. 	tmp = (char *)malloc(sizeof(char) * (len + k + 1));
  33.     if(tmp == NULL){
  34.         printf("ERROR\n");
  35.         return NULL;
  36.     }
  37.     for(i=0;i<len;i++){
  38.         tmp[i] = s[i];
  39.     }
  40.     for(i=0;i<k;i++){
  41.         tmp[len + i] = s[k - 1 - i];
  42.     }
  43.     tmp[len + k] = '\0';
  44.  
  45.     return tmp;
  46. }
  47.  
  48. int main(){
  49.     int i;
  50.     char nyuryoku[1024];
  51.     char *kaibun;
  52.     scanf("%s",nyuryoku);
  53.     kaibun = setPalindrome(nyuryoku);
  54.     printf("%s\n  -> %s\n",nyuryoku,kaibun);
  55.     free(kaibun);
  56.     return 0;
  57. }
  58.  
Success #stdin #stdout 0s 5352KB
comments (?)
stdin
copy 
abcd
stdout
copy 
abcd
  -> abcdcba
https://ideone.com/f7Odf5
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!